ABB Relion 650 Series Technical Manual page 491

1MRK 506 326-UUS B
which indicate that the gas pressure in the circuit breaker is below alarm level, the function
initiates output signal PRES_ALM, pressure below alarm level, after a set time delay and indicate
that maintenance of the circuit breaker is required. Similarly, if the input signal PRES_LO is high,
which indicate gas pressure in the circuit breaker is below lockout level, the function initiates
output signal PRES_LO, after a time delay. The two time delay settings,
tPressureLO , are included in order not to initiate any alarm for short sudden changes in the gas
pressure. If the gas pressure in the circuit breaker goes below the levels for more than the set time
delays the corresponding signals, PRES_ALM, pressure below alarm level and PRES_LO, pressure
below lockout level alarm will be obtained.
The input signal BLK_ALM is used to block the two alarms and the input signal BLOCK to block
both alarms and the function.
13.15.7 Technical data
Table 431: SSIMG (63) Technical data
Function
Pressure alarm
Pressure lockout
Temperature alarm
Temperature lockout
Timers
13.16 Insulation liquid monitoring function SSIML (71)
13.16.1 Identification
Function description
Insulation liquid monitoring function
13.16.2 Functionality
Insulation liquid monitoring function SSIML (71) is used for monitoring the circuit breaker
condition. Binary information based on the oil level in the circuit breaker is used as input signals to
the function. In addition, the function generates alarms based on received information.
Line distance protection REL650
Technical manual
Range or value
0.00-25.00
0.00-25.00
-40.00-200.00
-40.00-200.00
(0.000-60.000) s
IEC 61850
identification
SSIML
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tPressureAlarm and
Accuracy
-
-
-
-
± 0.5% ± 110 ms
IEC 60617 ANSI/IEEE C37.2
identification device number
- 71
Section 13
Monitoring
GUID-F034B396-6600-49EF-B0A5-8ED96766A6A0 v2
GUID-37669E94-4830-4C96-8A67-09600F847F23 v1
GUID-4CE96EF6-42C6-4F2E-A190-D288ABF766F6 v1
GUID-3B1A665F-60A5-4343-85F4-AD9C066CBE8D v3
485